%0 conference lecture %@ %A Hakvoort, J. H. M., Heineke, M., Heymann, K., Kuehl, H., Riethmueller, R., Witte, G. %D 1996 %J 9th International Scientific Wadden Sea Symposium %T Optical remote sensing of microphytobenthic biomass: a method to monitor tidal flat erodibility %U %X